6
7. Replace o’rings and back-up rings and lubricate them
Assemble in the reverse order.
DISASSEMBLE/ASSEMBLE K10 QUARTZ 1.5” SOUR SERVICE GAUGE IN ORDER TO
CHANGE O’RINGS AND METAL C-RING UNDER ELECTRONIC HOUSING.
The frequency of changing O-rings and C-ring under the electronic housing should be dependent
on well fluid types, temperature and gauge usage intensity. With high content H2S we
recommend changing these O-rings every month or 80 hours in well, whichever comes first.
But the final decision on Seals replacement frequency is have to be based on operator’s
company policies and instructions.
The frequency of changing O-rings and C-ring under battery housing is up to the tool operator
discretion. They should be replaced at the first evidences of wear.
All Kuster electronic gauges are furnished with Parker Company Viton O-rings, which cover the
majority of well fluids in the field, however the last decision on which type of O-rings to use is up
to the operator of the gauge.
A wrong choice could lead to tool malfunctioning and denial of warranty. Consult with the O-rings
manufacturer, if you are not sure that these O-rings are suitable for your applications. It is mainly
a concern for the well fluids with high content of H2S.
Electronic housing disassembly:
8. Unscrew slotted nut from the top of the LEMO connector with a fork wrench, which
comes with accessories.
9. Push connector just below the keyway cutout in the housing.
10. With the connector being below the keyway, carefully unscrew electronic housing from
the pressure sub.
11. Remove old O-rings and C-ring.
12. Check thread and O-rings grooves and lubricate them with Kuster lube grease.
13. Replace O-rings and C-ring on the pressure sub and lube them.
14. Check connector’s O-rings and replace if necessary.
Reassembly:
9. Extend telescopic clip through the keyway end of the housing.
10. Grab the connector with the clip.
11. Slide electronic board with connector through the housing, but keep connector below the
keyway.
12. With connector below the keyway, screw electronic housing onto pressure sub and
tighten it until C-ring is crushed.
13. Pull connector through the keyway.
14. Slide slotted nut over the telescopic clip.
15. Slide fork wrench over the telescopic clip.
16. Screw the slotted nut onto the end of the connector and tighten it with a fork wrench.
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